Prove that : cos20°/sin70° + cosθ/sin(90° - θ) = 2 - Sarthaks

Prove that : cos20°/sin70° + cosθ/sin(90° - θ) = 2

3 Find the value of ( k , ) ( frac { cos 20 ^ { circ } } { sin 70

Evaluate : (cos 70^(@))/(sin 20^(@))+(cos 59^(@))/(sin31^(@))-8sin^(2)30^(@), 9

Prove that tan70º=2 tan50º +tan 20º Find the value of sin 50º-sin

sin^(2)20^(@)+sin^(2) 70^(@))/(sin thetacos(90^(@)-theta)+cos

सिद्ध कीजिए कि(cos theta)/(sin(90^(@)-theta))+(sin

Prove the following: i sin θ sin90o θ cos θ cos 90o θ=0 ii cos90o

sin 20^(@), -cos20^(@)),(sin70^(@), cos70^(@))]=?`

सिद्ध कीजिए कि : (cos 20^(@))/(sin 70^(@)) + (cos

How to prove sin 70°/cos 20° = 1 without using a trigonometry

Prove that: sin 70°/cos 20° + cosec 20°/sec 70° - 2 cos 70° cosec

sin 70 Prove that cos 20 sec 70 cosec20_2cos 70 - cosec20 = 0.

What is the sum of sin ² 70 + sin ² 20 =? - Quora